Across
- 3. absorbing heat
- 5. holds the proton and neutrons
- 7. negative charge
- 8. has hydroxide ions
- 9. first name of man who invented periodic table
- 10. bonding between one metal and one non-metal
- 12. positive charge
- 13. neutral charge
Down
- 1. has hydrogen ions
- 2. bonding between two metals
- 4. reaction between acid and base
- 6. smallest particle
- 7. releasing heat
- 11. two of the same element w/ different number of neutrons